id,summary,reporter,owner,description,type,status,priority,component,version,resolution,keywords,cc,blockedby,blocking,reproduced,analyzed
1339,Auto insert fps filter as adapter for overlay filter inputs with different framerates,annorax,,"Now that the fps filter has been added (you're my heroes for adding it), it would be great if an fps filter would be auto-inserted before the overlay filter, where framerate conversion is required if the framerates of the two input vary (the way a scale filter is often auto-inserted wherever it's required).
To do this, whenever an overlay filter is used in a filter chain, the framerate of each of its inputs should be detected (using the same function used by ffprobe to populate the avg_frame_rate property), then insert an fps filter to upsample the input with the lower framerate to match the framerate of the other one.
Currently I do this manually: run ffprobe on each video file before performing an overlay, then insert an fps filter between the lower-fps file and the overlay filter. This means 3 procedure calls. It would be great if it could all be done in 1.",enhancement,new,wish,avfilter,git-master,,fps overlay filter,,,,0,0